Drum assembly



March 13, 1928.

L. J. BLACK DRUM ASSEMBLY Filed May 12. 1927 2 Sheets-Sheet 1 March 13,1928. 1,662,410

L. J. BLACK DRUM ASSEMBLY Filed May 12. 1927 2Sheets$heet 57 5/ Igwuzntow AW B/M1 Patented Mar. 13,- 1928.

UNITEDFSTATES LEE J. BLACK, 01 BEAUMONT,

mama ASSEMBLY.

Application filed May 12, 1927. Serial No. 190,848.

This invention relates to drum assemblies and more particularly to adrum assembly for use in connection with the draw-works of Well drillingapparatus. V

Changes in conditions in well drilling have brought to light the factthat the ordinary drum structure previously employed in the draw-worksof well drilling apparatus is inefiicient and dangerous when employedwith the present day deep well drilling apparatus and attempts tomodernize this ordinary drum structure and. adapt the same for use withdeep well drilling apparatus have so weakened the drum structure that itbe comes dangerous. These drum structures, as ordinarily manufactured,are furthermore difficult to apply to the draw-works shaft and whenapplied, demand an excessive space on the draw-works shaft, due to thefact that the keys which hold the drum in position upon the shaft mustbe driven from the outer ends of the drums and accordingly keyways mustbe provided, which extend beyond the outer-end. of the drum hub. Thisprovides a roughened shaft surface, which inhibits compactness, in thatat opposite ends of the drum of the draw-works a paratus, there arearranged upon the sha t, elements which have rotation with relation tothe shaft, so that these roughened shaft surfaces would tend to destroythe same. Furthermore, it has been found necessary in new drumstructures to employ means for watercooling the flanges of the drums,due to the fact that these drums .heat excessively through theiroperation against the brakes when lowering heavy loads through longdistances, as required in present day drilling apparatus. Thecombination of keyways and bores formed in the shaft for the passa e ofwater has a tendency to weaken the shaft, so that this shaft must bemade of much greater size if a proper safety factor is to be preserved.Accordingly, an im portant object of this invention is to provide a-drumconstruction, such that the keyway slots for the securing keys may bepositioned inwardly of the ends of the drum and accordingly permittheidrum structure to be as compactly arranged as possible for the sizedrum employed and which will permit of the use of water-cooled flangesupon the drum withoutthe formation of coinciding water passages andkeyways, which woul bled.

weaken the shaft structure and necessitate the use of a largershaft.

A ,further object of the'invention is to provide a device of thischaracter, in which the drum structure is such that the. roblem.

of circulating the cooling fluid an assembling the drum upon the shaftis greatly simplified.

These and other objects I attain by the construction shown in theaccompanying drawings, wherein for the purpose of-illustration is showna preferred embodiment of my invention and wherein Figure 1 is anenlarged fragmentary sectional view through the drum, shaft of adraw-works having a drum applied thereto in accordance with myinvention;

Figure 2 is a similar view showing the manner of setting the keys of thedrum I structure when positioned upon the shaft;

Figure 3 is a section on the line 3 -3 of Figure 2;

Figure 4 is a section on the line 4'4 of Figure 2.

Referring now more particularly to the drawings, the drum is formed intwo sections 10 and 11, each having a hub portion 12 and a brake flange13, which projects beyond the outer face of the outer end of its hub.These brake flanges provide an annular water circulation space 14. Theinner end of the drum section 11 is provided with an extension 15 havinga tapered outer face 16, which en ages with a correspondingly 'tap'eredface ormed u on the inner end of the drum section 10, w ich seatsagainst the end of the section 11 proper and combines therewith toprovide a continuous smooth drum surface. The inner face of the drum Ieach-drum section is formed with a pair of keyways 18spaced apart andadapted for the reception of ta ered ke s 19 inserted from the inner end0 the hu Each hub section is furthermore provided with openingsQOQpreferably four in number and uni formly spaced and twoof theopenings of' each hub structure align with the keyways of the o posite,hub when the drum is assem-" he extension 15 has an inwardly directedflange 21 having openings 22 corresponding -in number and arrangement tothe openings 20 of its hub formed therethrough The shaft 23 is providedwith keyways 24, for the reception of the keys 19, the outer ends ofwhich are spaced apart a distance less than the distance between theouter ends of the hubs when the sections of the drum are in assembledrelation and the inner ends of which extend inwardly of the inner endsof these hubs. Bores 25- extend inwardly from the ends of the shaft 23and terminate outwardly of the ends of the keyways. The shaft isprovided upon its exterior from a point immediately outwardly of theends of the keyways with threaded portions 20.

In assembling the drum upon the shaft, the keys are placed in positionand the drum sections pressed upon the shaft are properly engaged withthese keys. After the drum sections have been properly placed and thetapered extension 15 is fully engaged in the end of the section 10,collars 27 are screwed upon the threaded portions 26, so that they abutthe outer ends of the hub 12. These collars are of such width that theydo not project beyond the outer faces of the brake flanges 13 a distancegreater than is absolutely necessar for clearance and the innerfaces'of'these collars are formed with annular ooves 28, which are incommunication with the associated bore 25 of the shaft through a radialport 29. The annu-.

' is made between the water spaces by insorting a conduit 34 throughaligned openings 20 and 22 and connecting the same, as at 35, withconduits 36 communicating with the water spaces 14 at pointsdiametrically op osed to the conduits 32.

t will be obvious that by employing a structure of this character, thedrum is not only capable of being more conveniently and compactlyapplied to the shaft 23, but may be much more readily handled, since theweight of these sections'will be considerably less than that of theordinary drum structure which is ship ed as a unit. The operation ofpressing t e sections upon the drum will be much easier than that ofapplying the ordinary drum, and at the same tlme, a very convenient andefficient method of providnig water circulation is provided withoutweakening the shaft 23 to the extent that is ordinarily necessary.

Since the construction hereinbefore set forth is capable of a certainrange of change and modification without materially departing from thespirit of the invention, I do not limit myself to such specificstructure except as hereinafter claimed.

I claim 1. In a drum mounting for draw works and in combination, ashaft, a drum formed in two sections each including a hub, said sectionsassembled by relative movement thereof longitudinally of the shaft,coacting keyways in the shaft and said hub portions, keys therein, thekeyways of the shaft having their outer ends inwardly of the ends of thedrum when the sections thereof are in assembled relation upon the shaftand openings permitting driving access to the inner ends of said keys.

2. In a drum mounting for draw works and in combination, a shaft, a drumformed in two sections each including a hub, said sections assembled byrelative movement thereof longitudinally of the shaft, coacting ke waysin the shaft and said hub portions, 'eys therein, the keyways of theshaft having their outer ends inwardly of the ends of the drum when thesections thereof are in assembled relation upon the shaft and openingspermitting driving access to the inner ends of said keys and means uponthe shaft abutting the outer end faces of the hub sections for retainingsaid hub sections in assembled relation.

3. In a drum mounting for draw works and in combination, a shaft, a drumformed in two sections each including a hub, said sections assembled byrelative movement thereof longitudinally of the shaft, coacting keywaysin the shaft and said hub portions, keys therein, the keyways of theshaft having their outer ends inwardly of the ends of the drum when thesections thereof are in assembled relation upon the shaft and openingsin each hub portion permitting driving access to the inner ends of thekeys of the other of the hubs to seat the same.

4. In a drum mounting for draw works and in combination, a shaft, a drumformed in two sections each including a hub, said sections assembled byrelative movement ,thereof longitudinally of the shaft, coacting keywaysin the shaft and said hub portions, keys therein, the keyways of theshaft having their outer ends inwardly of the ends of the drum when thesections thereof are in assembled relation upon the shaft and openingspermittin driving access to the inner ends of said eys, said drumsections including portions telescopically engaging in the assemblythereof, the male element of the telescopic engagement having aninwardly extending flange for engagement with the shaft.

5. In a drum mounting for draw works and in combination, a shaft, a drumformed ill) Oil

in two' sections each including a hub, said sections assembled byrelative movement thereof longitudinally of the shaft, coacting keywaysin the shaft and said hub portions, the keyways of the shaft havingtheir outer ends inwardl of the ends of the drum when the sectionsthereof are in assembled relation upon the shaft, said drum sectionsinclud- ,ing portions telescopically engaging in the assembly thereof,the male element of the telescopic engagement having an inwardlyextending flange for engagement with the shaft.

* 6. In a drum mounting for draw works and in combination, a shaft, adrum formed in two sections each including a hub, said sectionsassembled by relative movement thereof longitudinally of the shaft,coacting keyways in the shaft and said hub portions, the keyways of theshaft having their outer ends inwardly of the ends of the drum when thesections thereof are in assembled relation upon the shaft, said drumsections including portions telescopically engaging in the assemblythereof, the male element of the telescopic engagement having aninwardly extending flange for engagement with the shaft, openings insaid flange aligning with the keyways of the hubs, each hub havingopenings therein aligning with the keyways of the other hub andpermitting access to the inner ends of keys positioned therein to seatthe same.

7. In a drum mounting for draw works and in combination, a shaft, a drumformed in two sections each including a hub, said sections assembled byrelative movement thereof longitudinally of the shaft, coacting keywaysin the shaft and said hub portions, the keyways of the shaft havingtheir outer ends inwardly of the ends of the drum when the sectionsthereof are in assembled relation upon the shaft, said drumsectionsincluding portions telescopically engaging in the assembly thereof, themale element of the telescopic engagement having an inwardly extendingflange for engagement with the shaft, and threaded collars upon theshaft engaging the outer ends of the hubs preventing separation thereof.

8. In a drummounting for draw works and in combination, a shaft, a drumformed in two sections each including a hub, said sections assembled byrelative movement thereof longitudinally of the shaft, coacting keywaysin the shaft and said hub portions,

the keyways of the shaft having, their outer ends inwardly of the endsof the drum when the sections thereof are in assembled relation 60 uponthe shaft, said drum sections including portions telescopically engagingin the as sembly thereof, the male element of the tele; scopicengagement having an inwardly extending flange for engagement with theshaft, )5 openings in said flange aligning with the keyways of the hubs,each hub having openings therein aligning with the keyways of the otherhub and permitting access to the inner ends of keys positioned thereinto seat the same, and threaded collars upon the shaft engaging the outerends of the hubs preventing separation thereof.

9. In a drum mounting for draw works and in combination, a shaft, a drumformed in two sections each including a hub, said sections assembled byrelative movement thereof longitudinally of the shaft, coacting keywaysin the shaft and said hub portions, the keyways of the shaft havingtheir outer ends inwardly of the ends of the drum when the sectionsthereofiare in assembled relation upon the shaft, said drum sectionsincluding portions telesco ically engaging in the assembly thereof, tiemale element of the telescopic engagement having an inward- 1y extendingflange for engagement with the shaft, openings in said flange aligningwith the keyways of the hubs, each -hfub having openings thereinaligning with the keyways of the other hub and permitting access to theinner ends of keys positioned therein to seat the same, threaded collarsupon the shaft engaging the outer ends of the hubs preventing separationthereof, said shaft'outwardly of the keyways being provided with a bore,the collars having grooves in communication with their respective boresthrough radial ports, opposite ends of the drum sections having brakeflanges each including an annular water cooling chamber, meansconnecting the groove of each collar with the water chamber of theassociated flanges and a connection between said water chamber.

10. In a drum mountin for draw works and in combination, a sha a drumformed in two sections each including a hub, said sections assembled byrelative movement thereof longitudinally of the shaft, coacting keywaysin the shaft and said hub portions, the keyways of the shaft havingtheir outer/ ends inwardly of the ends of the drum when the sectionsthereof are in assembled relation upon the shaft, said drum sectionsincluding port-ions telescopically engaging in. the assembly thereof,the male element of the tele- 11 scopic en agement having an inwardlyextending flange for engagement with the shaft, openings in said flangealigning with the keyways of the hubs,'each hub having openings thereinaligning with the keyw'a s of the other hub and permitting access to t einner ends of keys positioned therein to seat the same, threaded collarsupon the shaft engaging the outer ends of the hubs preventin separationthereof, said-shaft outwardly o the keyways being provided with a bore,the collars having grooves in communication with their respective boresthrough radial ports, opposite ends 'of the drum sections having brakeflanges each including an annular water cooling chamber, means forconnecting the groove of each collar with the water chamber of theassociated flanges and a connection between said water chamber.extending through the aligned opening of the hubs and flange.

11. In a drum mountin for draw works and in combination, a shaft, a drumformed in two sections each including a. hub, said sections assembled byrelative movement thereof longitudinally of the shaft, coacting keywaysin the shaft and said hub portions, keys therein, the keyways of theshaft having their outer ends inwardly of the ends of the drum when thesections thereof are in assembled relation upon the shaft and openingsin each of said hubs permitting driving access to the inner ends of thekeys associated with the other of the hubs.

12. In a drum mounting for draw works and in combination, a shaft, adrum upon the shaft having hub portions at its opposite ends and havinga hollow brake flange, coacting keyways in the shaft and said hubportions, keys therein, the keyways of the shaft having their outer endsinwardly of the ends of the hub portions, the hub portions havingopenings permitting driving access to the inner ends of the keys andmeans for conducting water to the hollow brake flange including bores inthe shaft outwardly of the ends of the drum, a conduit extending throughthe drum at the openings thereof and connections between said conduitand the bores including the hollow brake flange.

In testimony whereof I atlix my signature.

LEE J. BLACK.

